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3904-59-4

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3904-59-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3904-59-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,0 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3904-59:
(6*3)+(5*9)+(4*0)+(3*4)+(2*5)+(1*9)=94
94 % 10 = 4
So 3904-59-4 is a valid CAS Registry Number.

3904-59-4Downstream Products

3904-59-4Relevant articles and documents

Fluorination of tetrafluorobenzenes C6HF4R with XeF2

Bardin,Shchegoleva,Frohn

, p. 153 - 159 (2007/10/03)

Replacement of hydrogen by fluorine and addition of fluorine atoms to the aromatic ring were found in the reaction of XeF2 with 1-R-2,3,4,5-tetrafluorobenzene (R = H, F, Br, NO2) or 1-R-2,3,4,6-tetrafluorobenzene (R = H, CF3) in HF or CH2Cl2-BF3·OEt2. Only fluorine addition took place in the case of 1-R-2,3,5,6-tetrafluorobenzenes (R = H, Br, CF3) or 1-Br-2,3,4,6-tetrafluorobenzene. The role of cation radicals as reactive intermediates is discusseed.

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